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High Performance
Photodiode Sensors
918D
SERIES
Post, post holder, and clamping fork available for purchase separately
The RoHs compliant 918D Series Photodiode Sensors are
calibrated photodiode sensors with advanced features to
enhance performance.
UV and Visible Detectors, 200 - 1100 nm
918D-SL-OD1R
Silicon Detector, 400-1100 nm, OD1 Attenuator,
DB15 Connector
918D-SL-OD2R
Silicon Detector, 400-1100 nm, OD2 Attenuator, DB15
918D-SL-OD3R
Silicon Detector, 400-1100 nm, OD3 Attenuator, DB15
918D-UV-OD3R
UV Silicon Detector, 200-1100 nm, OD3 Attenuator, DB15z
• Smallest calibration uncertainty specifications in market
• Internal temperature sensor for thermal drift compensation
• Integrated attenuator, selectable from 10X to 1000X
• Attenuator on/off sensor
• Free-space and fiber optic measurements
• RoHS compliant
Germanium Detectors, 780 - 1800 nm
918D-IR-OD1R
Germanium Detector, 780-1800 nm, OD1 Attenuator, DB15
918D-IR-OD2R
Germanium Detector, 780-1800 nm, OD2 Attenuator, DB15
Features
918D-IR-OD3R
Germanium Detector, 780-1800 nm, OD3 Attenuator, DB15
Tightest Calibration Uncertainty
InGaAs Detectors, 800 - 1650 nm
918D-IG-OD1R
InGaAs Detector, 800-1650 nm, OD1 Attenuator, DB15
918D-IG-OD2R
InGaAs Detector, 800-1650 nm, OD2 Attenuator, DB15
918D-IG-OD3R
InGaAs Detector, 800-1650 nm, OD3 Attenuator, DB15
Enhanced Features
The Attenuator on/off switch can be automatically recognized by power meter models 1830-R,
1918-R, 1936-R, and 2936-R.
The 918D Series include a full spectral response calibration
utilizing NIST-traceable standards calibrated with highprecision equipment maintained in Newport’s optical
detector calibration facility. Tight calibration facility and
process control allows the tightest calibration uncertainty
in industry. Each detector is shipped with the calibration
data, which is electronically stored inside the detector's
EEPROM. A certificate of calibration as well as the actual
calibration curves and data are shipped with each detector
for attenuator and no attenuator modes. To maintain
accuracy and guarantee performance Newport
recommends annual photodiode detector calibration.
S E R I E S
The 918D Series Photodiode Sensors are designed to
outperform Newport's industry proven 818 Series
Calibrated Photodiode Sensors , by enhancing their
performance with advanced features. They feature
integrated calibration data storage, built-in OD1, OD2 or
OD3 attenuation filter with an electronic attenuator On/Off
sensor, and sensing electronics for temperature drift
compensation, making the detector more accurate in
temperature changes.
Exclusive OD3 attenuator technology extends the calibrated
optical dynamic range of our detectors by three decades.
Our attenuator design provides high damage threshold and
spectral flatness. With the low NEP associated with the
photodiodes Newport is using, a wider dynamic range is
achieved. For less than 1 mW input power, we recommend
to put the attenuator to OFF position (0.1 mW for 918D-UVOD3R between 200 - 400 nm) to maximize the signal to
noise ratio.
Highest Quality Photodiodes
Plots of various photodiode characteristics
Wide Dynamic Range with Built-in Attenuator
10
ABSOLUTE SPECTRAL RESPONSIVITY (A/W)
9 1 8 D
10
0
-1
Without OD3 Attenuator
10
10
10
-2
-3
-4
With OD3 Attenuator
10
-5
200
400
600
800
1000
1200
WAVELENGTH (nm)
1400
1600
818-UV/818-ST2-UV
918D-UV/918D-ST-UV
818-IR/918D-IR
818-ST2-IR/918D-ST-IR
818-IS-1/918D-IS-1
818-SL/918D-SL
818-ST2/918D-ST
818-IG/918D-IG
Typical spectral responsivity of Newport's low power detectors
1800
Newport uses the highest quality semiconductor detector
materials available. Available sensor types are silicon (Si),
UV-enhanced Si, Germanium, and Indium Gallium Arsenide
(InGaAs). Choose 918D-UV-OD3R for 200 - 400 nm
wavelength, but note that the maximum measurable power
level in 400 - 1100 nm is as low as 50 mW with the
attenuator on. Newport’s advanced in-house calibration
facility performs the tightest calibrations in the business,
further improving the absolute accuracy of our detectors.
Dimensions
1.32
(33.5)
0.60
(15.2)
Detector
Surface
0.228
(5.8)
8-32 THD
0.25 DP
Accessories
To directly mount the 918D head to an optical table consider
the 918D-BASE-KITR. It has an optical axis height of 1.00"
and is compatible with both Imperial and Metric table tops.
#8
DA15P Connector
M4
Free Space and Fiber Optic Adapters
Ø1.75
(Ø44.5)
Ø0.406
(Ø10.3)
1.000-4OUNS-2B THR
9 1 8 D
S E R I E S
918D Series Detector Specifications
Model
918D-UV-OD3R
918D-SL-OD3R
918D-IR-OD3R
918D-IG-OD3R
Spectral Range (nm)
200 to 1100
400 to 1100
780 to 1800
800 to 1650
Max. Measurable Power w/ Attenuator (W)
0.2W (200 - 400 nm) and 50 mW (400 - 1100 nm)
2
2
2
Max. Measurable Power w/o Attenuator (mW)
0.3 mW (200 - 400 nm);
0.1 mW (400 - 600 nm, >1050 nm),
0.07 mW (600 - 1050 nm)
4 mW
10 mW
10 mW
Power Density, Average Maximum w/o Attenuator (W/cm2)(1)
0.2
2
3
3
Pulse Energy, Maximum - w/ Attenuator (J)(2)
500 n
5m
5m
5m
Pulse Energy, Maximum - w/o Attenuator (J)
0.5 n
5n
5n
5n
Calibration Uncertainty (Without Attenuator)(5)
4% @ 200-219nm,
2% @ 220-349nm,
1% @ 350-949nm,
4% @ 950-1100nm
1% @ 400-940nm,
4% @ 941-1100nm
2% @ 780-910nm,
2% @ 911-1700nm,
4% @1701-1800nm
2% @ 800-900nm,
2% @ 901-1650nm
Calibration Uncertainty (With Attenuator)(5)
8% @ 200-219nm,
2% @ 220-349nm,
1% @ 350-949nm,
4% @ 950-1100nm
1% @ 400-940nm,
4% @ 941-1100nm
5% @ 780-910nm,
2% @ 911-1700nm,
4% @ 1701-1800nm
5% @ 800-900nm,
2% @ 901-1650nm
Power Density, Average Max w/ Attenuator (W/cm2)(1)
30
Uniformity (%)(3)
±2
Linearity (%)
±0.5
Rise Time (ms)
5.9
2
2
2
Material
UV Enhanced Silicon
Silicon
Germanium
Indium Gallium Arsenide
Active Area (cm2)
1
Active Diameter (cm)
1.13
0.071
0.3
Shape
Attenuator
Built-In OD3
Built-In (4)
Calibration
Stored Internally
Operating Temperature
5°C to 50°C, <70% RH
Built-In (4)
Built-In (4)
Based on maximum power density of the OD3 attenuator. For OD2 reduce the value by 10x, & for OD1, derate value by 100x.
15 ns pulse width, max w/ attenuator is for OD3. For OD2 derate listed value by 10x, & for OD1, derate value by 100x.
Uniformity specification applies to photodiode only. It does not apply to the attenuator.
Selected at time of ordering.
Calibration uncertainty can be varied depending on the NIST transfer standard uncertainty variation.
Newport Corporation, Global Headquarters
1791 Deere Avenue, Irvine, CA 92606, USA
PHONE: 1-800-222-6440 1-949-863-3144
FAX: 1-949-253-1680
www.newport.com
EMAIL: [email protected]
Complete listings for all global office locations are available online at www.newport.com/contact
Newport Corporation, Irvine, California and Franklin, Massachusetts; Evry and Beaune-la-Rolande, France and Wuxi, China have all been certified compliant with ISO 9001 by the British Standards Institution. Santa Clara, California is DNV certified.
DS- 041503
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